Not really sure it was a rip-off, but I once ordered a cellphone from an overseas store, since they really jack up the prices here in my country. When it arrived, the package felt oddly light. I had the good sense to film myself unboxing it - the package had everything BUT the phone in it (charger, headphones, booklet..).
I used the video evidence and demanded my money back - the store owner apologized over and over, and said it was probably stolen in customs or something. It's just annoying that I had to wait for its arrival.
Hope you can get a refund or at least some compensation.